
Temporal Action Proposal Generation. For this task, Average Recall (AR) with multiple IoU thresholds is usually used as evaluation metrics.
Most methods use IoU thresholds set \([0.5\)  : \(0.05\)  : \(0.95]\)  in ActivityNet-1.3 [1]} and \([0.5:0.05:1.0]\)  in THUMOS14 [2]}.
To evaluate the relation between recall and proposals number, most methods evaluate AR with Average Number of proposals (AN) on both datasets, which is denoted as AR@AN. On ActivityNet-1.3, area under the AR vs. AN curve (AUC) is also used as metrics, where AN varies from 0 to 100.
